Mesogenic compounds, liquid crystal medium and liquid crystal display
申请人:Merck Patent GmbH
公开号:EP1690917B1
公开(公告)日:2008-10-08
Combined Cyanoborylation, C–H Activation Strategy for Styrene Functionalization
作者:Annabel Q. Ansel、John Montgomery
DOI:10.1021/acs.orglett.0c03138
日期:2020.11.6
A one-pot multicomponent copper-catalyzed protocol for borylation/ortho-cyanation of styrene derivatives followed by a Suzuki–Miyaura coupling provides a platform to explore the factors that control the selectivity between distal or proximal functionalization of arenes. The development of divergent nitrile-directed C–H functionalization (acetoxylation, pivalation, and methoxylation) offers an effective
Nickel‐Mediated Trifluoromethylation of Phenol Derivatives by Aryl C−O Bond Activation
作者:Wei‐Qiang Hu、Shen Pan、Xiu‐Hua Xu、David A. Vicic、Feng‐Ling Qing
DOI:10.1002/anie.202004116
日期:2020.9.7
trifluoromethylation reactions. Tremendous efforts have focused on copper‐ and palladium‐mediated/catalyzed trifluoromethylation of aryl halides. In contrast, no general method exists for the conversion of widely available inert electrophiles, such as phenol derivatives, into the corresponding trifluoromethylated arenes. Reported herein is a practical nickel‐mediated trifluoromethylation of phenol derivatives with readily